Okay kiddo, so a ploughman's lunch is a meal that people in the past used to eat while they were working in the fields. It's made up of some tasty foods that are easy to carry and don't need to be cooked.
Usually, a ploughman's lunch includes bread, cheese, pickles, and maybe some ham or other meat. You can also have some fruit or vegetables on the side for a healthy snack.
The story goes that when farmers or ploughmen would go out to work in the fields all day, their wives would pack them a lunch with these foods. They could eat it while they were resting or taking a break from the hard work.
Nowadays, people still enjoy ploughman's lunches as a tasty and satisfying meal. Some restaurants even have them on the menu! So next time you're feeling hungry, you can make your very own ploughman's lunch just like the farmers of olden times.